[PATCH] tile: create new math-tests.h header

[Joseph Myers]

On Thu, 17 Nov 2016, Chris Metcalf wrote:

> > All the tile sfp-machine.h files in libgcc seem to define _FP_KEEPNANFRACP
> > to 1, so not preserving NaN payloads seems odd here.
> 
> So perhaps it's some kind of testing bug, or I'm otherwise
> confused.  The following small program seems to suggest

Indeed, you'll need to investigate why the test fails in more detail.  
(The rest of your math-tests.h generically makes sense for any system 
without exceptions / rounding modes support.)

-- 
Joseph S. Myers
joseph@codesourcery.com